Dr. Jack Kreindler, physician, entrepreneur, and physiologist, returns to my podcast to discuss his Antarctic expedition and insights on human resilience. We explore the differences between male and female physiology in extreme environments, the importance of communication and load-sharing in endurance challenges, and the value of embracing discomfort for personal growth. Jack shares his views on developing resilience in modern society, the entrepreneurial mindset, and his work in performance medicine. Our conversation touches on the balance between risk-taking and longevity, the richness of lived experiences, and the importance of creative problem-solving in both business and adventure. Jack's parting wisdom: "Don't die dull."